The ScalarSpinInfo class is designed to be the implementation of the spin information for a scalar particle. More...

#include <ScalarSpinInfo.h>

Inheritance diagram for ThePEG::Helicity::ScalarSpinInfo:

[legend]

Standard constructors and destructors.
	ScalarSpinInfo ()
	Default constructor.

	ScalarSpinInfo (const Lorentz5Momentum &p, bool time)
	Standard Constructor.

virtual EIPtr	clone () const
	Standard clone methods.

virtual void	transform (const LorentzMomentum &, const LorentzRotation &)
	Perform a lorentz rotation of the spin information.

static void	Init ()
	Standard Init function.

ScalarSpinInfo &	operator= (const ScalarSpinInfo &)=delete
	Private and non-existent assignment operator.

Additional Inherited Members
Public Types inherited from ThePEG::SpinInfo
enum	DevelopedStatus { Undeveloped =0 , Developed =1 , NeedsUpdate =2 , StopUpdate =3 }
	Status for the implementation of spin correlations. More...

Public Types inherited from ThePEG::Pointer::ReferenceCounted
typedef unsigned int	CounterType
	The integer type used for counting.

Public Member Functions inherited from ThePEG::SpinInfo
void	productionVertex (VertexPtr in) const
	Set the vertex at which the particle was produced.

tcVertexPtr	productionVertex () const
	Get the vertex at which the particle was produced.

void	decayVertex (VertexPtr in) const
	Set the vertex at which the particle decayed or branched.

tcVertexPtr	decayVertex () const
	Get the vertex at which the particle decayed or branched.

bool	decayed () const
	Has the particle decayed?

void	decayed (bool b) const
	Set if the particle has decayed.

DevelopedStatus	developed () const
	Return true if the decay matrix required to perform the decays of the siblings of a particle has been calculated.

void	decay (bool recursive=false) const
	Calculate the rho matrix for the decay if not already done.

virtual void	undecay () const
	Calculate the rho matrix for the decay if not already done.

void	develop () const
	Set the developed flag and calculate the D matrix for the decay.

void	needsUpdate () const
	Needs update.

void	stopUpdate () const
	Used for an unstable particle to temporarily stop redevelop and redecay at that particle.

PDT::Spin	iSpin () const
	Return 2s+1 for the particle.

const Lorentz5Momentum &	productionMomentum () const
	Return the momentum of the particle when it was produced.

const Lorentz5Momentum &	currentMomentum () const
	The current momentum of the particle.

bool	timelike () const
	Return true if particle is timelike (rather than spacelike).

int	productionLocation () const
	Access to the locations.

int	decayLocation () const
	Decay Location.

RhoDMatrix	rhoMatrix () const
	Access the rho matrix.

RhoDMatrix &	rhoMatrix ()
	Access the rho matrix.

RhoDMatrix	DMatrix () const
	Access the D matrix.

RhoDMatrix &	DMatrix ()
	Access the D matrix.

bool	isNear (const Lorentz5Momentum &p)
	Check if momentum is near to the current momentum.

	SpinInfo ()
	Default constructor.

	SpinInfo (PDT::Spin s, const Lorentz5Momentum &p=Lorentz5Momentum(), bool time=false)
	Standard Constructor.

	SpinInfo (const SpinInfo &)
	Copy-constructor.

virtual bool	hasPolarization () const
	Returns true if the polarization() has been implemented in a subclass.

virtual DPair	polarization () const
	Return the angles of the polarization vector as a pair of doubles.

virtual void	rebind (const EventTranslationMap &trans)
	Rebind to cloned objects.

void	update () const
	Method to handle the delelation.

virtual void	reset ()
	Reset - Undoes any transformations and calls undecay.

virtual void	rebind (const EventTranslationMap &)
	Rebind to cloned objects.

virtual EIPtr	clone () const
	Standard clone method.

Public Member Functions inherited from ThePEG::Base
virtual	~Base ()
	The virtual destructor.

void	debug () const
	Print out debugging information for this object on std::cerr.

virtual void	debugme () const
	Print out debugging information for this object on std::cerr.

Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted
CounterType	referenceCount () const
	Return the reference count.

Static Public Member Functions inherited from ThePEG::SpinInfo
static void	Init ()
	Standard Init function.

Static Public Member Functions inherited from ThePEG::EventInfoBase
static void	Init ()
	Standard Init function.

Static Public Member Functions inherited from ThePEG::Base
static void	Init ()
	The standard Init function used to initialize the interfaces.

Public Attributes inherited from ThePEG::Pointer::ReferenceCounted
const unsigned long	uniqueId
	The unique ID.

Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted
	ReferenceCounted ()
	Default constructor.

	ReferenceCounted (const ReferenceCounted &)
	Copy-constructor.

ReferenceCounted &	operator= (const ReferenceCounted &)
	Assignment.

Detailed Description

The ScalarSpinInfo class is designed to be the implementation of the spin information for a scalar particle.

Obviously it is pretty trival in this case.

Author: Peter Richardson

Definition at line 27 of file ScalarSpinInfo.h.

Constructor & Destructor Documentation

◆ ScalarSpinInfo() [1/2]

ThePEG::Helicity::ScalarSpinInfo::ScalarSpinInfo ( )

inline

Default constructor.

Definition at line 36 of file ScalarSpinInfo.h.

◆ ScalarSpinInfo() [2/2]

ThePEG::Helicity::ScalarSpinInfo::ScalarSpinInfo	(	const Lorentz5Momentum &	p,
		bool	time
	)

inline

Standard Constructor.

Parameters

p	the production momentum.
time	true if the particle is time-like.

Definition at line 43 of file ScalarSpinInfo.h.

Member Function Documentation

◆ clone()

virtual EIPtr ThePEG::Helicity::ScalarSpinInfo::clone ( ) const

inlinevirtual

Standard clone methods.

Reimplemented from ThePEG::SpinInfo.

Definition at line 57 of file ScalarSpinInfo.h.

◆ transform()

virtual void ThePEG::Helicity::ScalarSpinInfo::transform	(	const LorentzMomentum &	,
		const LorentzRotation &
	)

virtual

Perform a lorentz rotation of the spin information.